1.2.13—Models
- Syllabus
- First assessment 2026
- Objective
- 1.2.13
- Level
- SL
A Model Represents a Question
A model is a purposeful simplification—graph, diagram, equation, simulation or words—that represents a system so we can understand or predict a response.
State what the model leaves in, what it leaves out and which question it answers. Changing an input tests a conditional response, not reality in every detail.
A reservoir model links rainfall, storage and outflow; changing rainfall predicts storage change under the model’s assumptions.
Yes, if it represents relationships for a question; a computer is not required.
A model is not only a physical replica or computer simulation.